This paper presents a new system of graphical representation, which has been given a provisional name: Extended Perspective System - EPS. It results from a systemic approach to the issue of perspective, sustained by several years of academic research and pedagogical experience with architecture students. The EPS aims to be a global and unified perspective system, gathering the current autonomous perspective systems and turning them into particular states of a broader conceptual framework. Through the use of in-built specific operations, which become particularly effective in a computational environment, the EPS creates and contains an unlimited set of in-between new states, which can also be considered legitimate and particular perspective systems. Considerations of its potential role in architectural descriptive drawing are discussed.